Merge ARM fixes
[linux-2.6] / arch / arm / mach-iop32x / glantank.c
1 /*
2  * arch/arm/mach-iop32x/glantank.c
3  *
4  * Board support code for the GLAN Tank.
5  *
6  * Copyright (C) 2006 Martin Michlmayr <tbm@cyrius.com>
7  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
8  *
9  * This program is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU General Public License as published by the
11  * Free Software Foundation; either version 2 of the License, or (at your
12  * option) any later version.
13  */
14
15 #include <linux/mm.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/pci.h>
19 #include <linux/string.h>
20 #include <linux/slab.h>
21 #include <linux/serial_core.h>
22 #include <linux/serial_8250.h>
23 #include <linux/mtd/physmap.h>
24 #include <linux/platform_device.h>
25 #include <asm/hardware.h>
26 #include <asm/io.h>
27 #include <asm/irq.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/pci.h>
31 #include <asm/mach/time.h>
32 #include <asm/mach-types.h>
33 #include <asm/page.h>
34 #include <asm/arch/time.h>
35
36 /*
37  * GLAN Tank timer tick configuration.
38  */
39 static void __init glantank_timer_init(void)
40 {
41         /* 33.333 MHz crystal.  */
42         iop_init_time(200000000);
43 }
44
45 static struct sys_timer glantank_timer = {
46         .init           = glantank_timer_init,
47         .offset         = iop_gettimeoffset,
48 };
49
50
51 /*
52  * GLAN Tank I/O.
53  */
54 static struct map_desc glantank_io_desc[] __initdata = {
55         {       /* on-board devices */
56                 .virtual        = GLANTANK_UART,
57                 .pfn            = __phys_to_pfn(GLANTANK_UART),
58                 .length         = 0x00100000,
59                 .type           = MT_DEVICE
60         },
61 };
62
63 void __init glantank_map_io(void)
64 {
65         iop3xx_map_io();
66         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
67 }
68
69
70 /*
71  * GLAN Tank PCI.
72  */
73 #define INTA    IRQ_IOP32X_XINT0
74 #define INTB    IRQ_IOP32X_XINT1
75 #define INTC    IRQ_IOP32X_XINT2
76 #define INTD    IRQ_IOP32X_XINT3
77
78 static inline int __init
79 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
80 {
81         static int pci_irq_table[][4] = {
82                 /*
83                  * PCI IDSEL/INTPIN->INTLINE
84                  * A       B       C       D
85                  */
86                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
87                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
88                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
89                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
90         };
91
92         BUG_ON(pin < 1 || pin > 4);
93
94         return pci_irq_table[slot % 4][pin - 1];
95 }
96
97 static struct hw_pci glantank_pci __initdata = {
98         .swizzle        = pci_std_swizzle,
99         .nr_controllers = 1,
100         .setup          = iop3xx_pci_setup,
101         .preinit        = iop3xx_pci_preinit,
102         .scan           = iop3xx_pci_scan_bus,
103         .map_irq        = glantank_pci_map_irq,
104 };
105
106 static int __init glantank_pci_init(void)
107 {
108         if (machine_is_glantank())
109                 pci_common_init(&glantank_pci);
110
111         return 0;
112 }
113
114 subsys_initcall(glantank_pci_init);
115
116
117 /*
118  * GLAN Tank machine initialization.
119  */
120 static struct physmap_flash_data glantank_flash_data = {
121         .width          = 1,
122 };
123
124 static struct resource glantank_flash_resource = {
125         .start          = 0xf0000000,
126         .end            = 0xf007ffff,
127         .flags          = IORESOURCE_MEM,
128 };
129
130 static struct platform_device glantank_flash_device = {
131         .name           = "physmap-flash",
132         .id             = 0,
133         .dev            = {
134                 .platform_data  = &glantank_flash_data,
135         },
136         .num_resources  = 1,
137         .resource       = &glantank_flash_resource,
138 };
139
140 static struct plat_serial8250_port glantank_serial_port[] = {
141         {
142                 .mapbase        = GLANTANK_UART,
143                 .membase        = (char *)GLANTANK_UART,
144                 .irq            = IRQ_IOP32X_XINT3,
145                 .flags          = UPF_SKIP_TEST,
146                 .iotype         = UPIO_MEM,
147                 .regshift       = 0,
148                 .uartclk        = 1843200,
149         },
150         { },
151 };
152
153 static struct resource glantank_uart_resource = {
154         .start          = GLANTANK_UART,
155         .end            = GLANTANK_UART + 7,
156         .flags          = IORESOURCE_MEM,
157 };
158
159 static struct platform_device glantank_serial_device = {
160         .name           = "serial8250",
161         .id             = PLAT8250_DEV_PLATFORM,
162         .dev            = {
163                 .platform_data          = glantank_serial_port,
164         },
165         .num_resources  = 1,
166         .resource       = &glantank_uart_resource,
167 };
168
169 static void glantank_power_off(void)
170 {
171         __raw_writeb(0x01, 0xfe8d0004);
172
173         while (1)
174                 ;
175 }
176
177 static void __init glantank_init_machine(void)
178 {
179         platform_device_register(&iop3xx_i2c0_device);
180         platform_device_register(&iop3xx_i2c1_device);
181         platform_device_register(&glantank_flash_device);
182         platform_device_register(&glantank_serial_device);
183
184         pm_power_off = glantank_power_off;
185 }
186
187 MACHINE_START(GLANTANK, "GLAN Tank")
188         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
189         .phys_io        = GLANTANK_UART,
190         .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
191         .boot_params    = 0xa0000100,
192         .map_io         = glantank_map_io,
193         .init_irq       = iop32x_init_irq,
194         .timer          = &glantank_timer,
195         .init_machine   = glantank_init_machine,
196 MACHINE_END